34 m. A. D. Michael on 



so much stronger than indicated by van der Wulp, there is no 

 doubt that the present specimen is the same species, as the 

 pecuhar wing-characters cannot be mistaken. The generic 

 characterization must be changed somewhat, however, espe- 

 cially as regards the presence of distinct vibrissse. 



Dexiidae. 



22. Euantha dives, Wd. 

 Eup.ntha dives, Wd., v. d. Wulp, Biol. Centr.-Atn., Dipt. ii. p. 249. 



Two males, March 6 and 16, San Rafael. They differ 

 from V. d. Wulp's description only as follows : — 



Subtrigonal spot of cheeks brownish, not well defined. 

 Coxffi reddish yellow. Tegulse pale, with yellowish tinge. 



Length 12-^ millim. 



In V. d. Wulp's synoptic table of Dexiidae, in the Biol. 

 Centr.-Am., Dipt., he puts Euantha in section without costal 

 spine on wings. E. dives certainly bears a sj)ine on costa 

 just before end of auxiliary vein. He also makes synopsis 

 read for Euantha " wings unicolorous," which is evidently a 

 typographical error. I am sorry to find that I inadvertently 

 perpetuated these errors in my synopsis of Dexiidae in Trans. 

 Am. Ent. Soc. xix. p. 275. The table there given should 

 be corrected in accordance with the above. 



V. — The Classification q/" Oribatidae. 

 By A. D. Michael, F.L.S. 



A PAPER by Dr. A. C. Oudemans has appeared in the 

 Tijdschr. voor Entomologie entitled " List of Dutch Acari, 

 Latr., first part Oribatei, Dug., with synonymical notes and 

 other remarks." It is always a pleasure to acarologists to 

 see a paper by Dr. Oudemans upon the creatures which tliey 

 study, and more especially so when the paper is written in a 

 language more familiar to most biologists than Dutch is. 

 This paper is chiefly upon the Oribatidie, and is, in many 

 respects, very useful ; but as it seeks to make numerous 

 changes in the nomenclature of genera, species, anatomical 

 parts, &c., and in classification, I shall probably be expected 

 to answer it. This I will endeavour to do so far as I think 

 the paper requires an answer. 



Firstly, I may fairly congratulate Dr. Oudemans on his 

 knowledge of the English language, in which the paper is 

 written. 



